1. Wireless IOT Standards and Protocols
Name : Makarand Badgujar
MIS : 111409001
Year & Branch : B.Tech Instrumentation & Control
2. Overview
IOT- connecting devices, collaborative decisions, acting smartly.
Various new protocols developing rapidly to meet different IOT requirements.
The protocols can be classified according to different organizational layers
Transportation (Data Link )layer concerned with transmission & reception, ack., checksum
PHY and MAC layer protocols (Combined).
Infrastruct Identificat Transport Discovery Data Device
Management
Semantic Framework
6LowPAN EPC Wifi mDNS MQTT TR-069 JSON-LD Allioyn
IPv4/IPv6 uCode Bluetooth DNS-SD CoAP OMA-DM IoTivity
RPL URIs LPWAN Physical
Web
AMQP Web Thing
Model
Weave
4. ZigBee
ZigBee Pro 3rd iteration of the standard – Backward
compatible
Low power wireless mesh network.(Tree, Star)
Builds on PHY & MAC layer described in IEEE
802.15.4.
Supports Global 2.4GHz & Region specific
bands.(800 MHz)
Speed -28 kbps to 250 kbps
Supports “Application Profiles” which define
protocols for specific applications.
Suitable for building automation, safety systems etc.
5. Bluetooth
Standard: IEEE 802.15.1(2002)
Managed by Special interest Group (30,000)
Packet based protocol with master-slave architecture
Uses RF (Radio Frequency)
1. ISM band between 2.4-2.485 GHz.
2. Frequency hopping over 79 channels, 1600
hops/second. (pseudo-randomaly)
3. Each channel uses 1 MHz bandwidth.
Standard wire-replacement communications protocol.
Low-power consumption, with a short range.
6. Wi-Fi
IEEE 802.11(1990)- Revised in 1997
IEEE modified the standard in 1999 to include: 802.11b, 802.11a, 802.11g (added in 2003)
a-Commercial and b-home purpose
Concerned with 2 lower layer of OSI model.
MAC layer uses CSMA/CA protocol to manage
shared medium.
7. Comparison of Different Wi-Fi standard
Factors 802.11b 802.11g 802.11a 802.11n
Operating Band 2.4-2.49 GHz 2.4-2.49 GHz 5.18-5.87 GHz 2.4 & 5 bands
Channels 11 channels
3 non-
overlapping
Same 12 channels
8 non-
overlapping
Maximum 128
channels
Transfer rate 1-11 Mbps
(4-5 Mbps)
Up to 54 Mbps
(14-25Mbps)
Up to 54 Mbps
(27 Mbps) OFDM
Up to 600 Mbps
Technique Direct-sequence
spread-spectrum
Frequency
division
Multiplexing
Frequency
division
Multiplexing
CCK, DSSS, or
OFDM
Range Longest Medium Shortest
Losses
Frequency
Speed
Frequency
Low
Low
Low
Low
High
High
Depends on the
band used.
